Retinal Photoreceptor Cell Outer Segment

**Definition:** The light sensitive outer portion of a retinal rod or a cone photoreceptor cell. The outer segment contains a stack of disk membranes laden with photoreceptive pigments (RETINAL PIGMENTS). The outer segment is connected to the inner segment by a PHOTORECEPTOR CONNECTING CILIUM.

**Tree numbers:** - A08.675.650.850.625.670.375 - A08.675.650.915.937.670.375 - A08.800.950.937.670.375 - A09.371.729.831.625.670.375 - A11.671.650.850.625.670.375 - A11.671.650.915.937.670.375

**Synonyms:** - Retinal Outer Segment - Retinal Photoreceptor Outer Segment